# graphviz 14.1.3

- Product: graphviz (https://whatsnew.fyi/product/graphviz)
- Vendor: graphviz
- Date: 2026-03-03
- Version: 14.1.3
- Original notes: https://gitlab.com/graphviz/graphviz/-/tags/14.1.3
- Permalink: https://whatsnew.fyi/product/graphviz/releases/14.1.3

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

---

See the CHANGELOG .

- **changed** — Using long node names in combination with the fdp layout algorithm no longer results in truncated generated names
- **changed** — Vertical centering of text within HTML-like table cells has been improved
- **changed** — The existing ability to provide a numeric parameter to -v to specify verbosity level is newly documented in dot --help
- **fixed** — gvmap no longer dereferences a null pointer when reading position-less graphs
- **fixed** — gvmap no longer crashes when adding coordinate data
- **fixed** — mm2gv no longer accepts input matrices with non-real element type
- **fixed** — The Tcldot_Init, Tcldot_builtin_Init, and Tcldot_SafeInit symbols in tcldot.dll are externally visible on Windows
- **fixed** — The Tclpathplan_Init and Tclpathplan_SafeInit symbols in tclpathplan.dll are externally visible on Windows
- **fixed** — The Autotools build system more consistently uses $PYTHON3 instead of python3 when invoking Python
- **fixed** — The Autotools build system explicitly links against libglu libraries when linking against libglut
- **fixed** — Corrected time formatting in verbose info/debug messages to show HH:MM:SS instead of HH:SS
- **fixed** — Further parts of the network simplex algorithm have been rewritten in a non-recursive style to allow processing larger graphs that previously caused stack overflows
- **fixed** — Canonicalizing an empty string or a string entirely made up of characters needing escaping no longer triggers an out-of-bounds memory write
- **fixed** — An off-by-one error in the network simplex algorithm has been corrected

###### Changed

- Using long node names in combination with the fdp layout algorithm no longer
  results in truncated generated names.
- Vertical centering of text within HTML-like table cells has been improved.
- The existing ability to provide a numeric parameter to `-v`
  to specify verbosity level are newly documented in `dot --help`.

###### Fixed

- `gvmap` no longer dereferences a null pointer when reading position-less
  graphs.
- `gvmap` no longer crashes when adding coordinate data.
- `mm2gv` no longer accepts input matrices with non-`real` element type.
  Previously these would be accepted but processed incorrectly leading to
  out-of-bounds memory reads and writes.
- The `Tcldot_Init`, `Tcldot_builtin_Init`, and `Tcldot_SafeInit` symbols in
  `tcldot.dll` are externally visible on Windows. #2809
- The `Tclpathplan_Init` and `Tclpathplan_SafeInit` symbols in `tclpathplan.dll`
  are externally visible on Windows. #2809
- The Autotools build system more consistently uses `$PYTHON3` instead of
  `python3` when invoking Python. This ensures developers are more easily able
  to control the Python installation in use from the top level.
- The Autotools build system explicitly links against libglu libraries when
  linking against libglut.
- Corrected time formatting in verbose info/debug messages (enabled by -v).
  Previously, minutes was missing, showing HH:SS instead of HH:MM:SS.
- Further parts of the network simplex algorithm have been rewritten in a
  non-recursive style. This allows processing larger graphs that previously
  caused stack overflows. #2782
- Canonicalizing an empty string or a string entirely made up of characters
  needing escaping no longer triggers an out-of-bounds memory write. This was a
  regression in Graphviz 13.0.1. #2743
- An off-by-one error in the network simplex algorithm has been corrected. This
  could have led to suboptimal layout in some edge cases. This was a regression
  in Graphviz 13.0.0.